Method and apparatus for sealing tubulars

A valve arrangement in a tubular having a first one way valve configured to prevent fluid flow in the tubular in a first direction; and a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction.

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Bibliographische Detailangaben
Hauptverfasser:	Odell, II, Albert C, Le, Tuong Thanh, Twardowski, Eric M
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	A valve arrangement in a tubular having a first one way valve configured to prevent fluid flow in the tubular in a first direction; and a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction.